Convoy Effect for FCFS $[10$ points$]$

Devise a scenario where you have $5$ processes, and you want to illustrate that the

FCFS atgorithm suffers from the "convoy effect".

a$)$ Fill in the table below so that $P_2$ will create the convoy effect for $P_3-$P$5.$

b$)$ Explain why you will observe the convoy effect from the table that you filled in$.$